Help in Understanding Hydrogen Fuel Cells?

I'm doing a presentation on Hydrogen Fuel Cells for my class, but I'm having a hard time understanding how exactly it is that they work. I'm only able to find information on fuel cells and they tend to not be descriptive on the hydrogen part. If someone could please link some articles that explain the topic and possibly try to explain how they work I would be very happy. Thank you.

Can you be more specific about what it is you're looking for? I've been studying and building hydrogen fuel cells for my entire career as a graduate student and sometimes even I have a hard time understanding how they work.